According to Judd's co-host Monty, the two were casually chatting off-air before the mum of four dropped a pretty shocking story.

"Alright, so here's the thing. Confession," she started.

"After I had Billie, she was probably a couple of weeks old and I needed to go into the city and go to the toilet but I had Billie in this pram and was still getting used to the whole newborn thing again so I thought I'll just hold on and wait until I get home," she added.

A post shared by Rebecca Judd (@becjudd) on May 28, 2017 at 1:44am PDT

But what Judd had forgotten was that she had "just pushed a baby out of there" and that her pelvic floor was not as good as it used to be.

"So I get into the carpark, put her in, put the pram in, got into the car and I sit in the driver's seat and I'm like 'Oh my god, it's actually about to come out. I can't hold this in, I'm so post-natal.'

"Luckily, I had a spare nappy in the glovebox so I just whacked it on and away we went," she said.

Despite Judd struggling to hold it in, she had nothing but praise for the nappies.

A post shared by Rebecca Judd (@becjudd) on May 25, 2017 at 6:38pm PDT

But Monty wasn't done with her co-host yet, forcing Judd to elaborate on the inner workings of her nappy use.

"That is a grim situation and those newborn baby nappies are so tiny. Did you just put it in your undies and pull your pants down?" Monty asked.

"I had maternity jeans on so you just pull it out and slip the nappy in. Of course I'm scrunching down really low so no one in the carpark can see me and I just kind of put it in like a big pad and just went away with it and binned it when I got home," Judd said.

"I just thought, 'Hey, this could really take off,'" she added.

After Monty recovered from the confession, she took the opportunity to laugh at the Postcards presenter.

"I love it when you tell stories like that, when I'm like 'Oh my god, from the outside you're so glamorous but on the inside you're actually a real, dirty foul little bird,'" Monty laughed.